Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Laminar Co., Ltd.

Youhwan Son

Kwangjin Park

Byungjin Choi

Sukgi Hong

Junho Park

Jinhwan Park

Jinsu Ha

Kanghee Lee

Byongyong Yu

Jayhyok Song

Jaegu Yoon

Andrei Kapylou

Dongjin Ham

Sungjin Ahn

Donghee Yeon

Seongyong Park

Dongwook Han

Dongwook Shin

Jinseok Hong

Yongnam Ham

San Moon

Jongpal Hong

A composite cathode active material including: a secondary particle including a plurality of primary particles including a lithium transition metal oxide having a layered crystal structure; and a coating layer disposed on a surface of the secondary particle and between the primary particles of the plurality of primary particles, wherein the coating layer includes a lithium cobalt composite oxide having a spinel crystal structure, and wherein the lithium cobalt composite oxide includes cobalt (Co) and a Group 2 element, a Group 12 element, a Group 13 element, or a combination thereof.

Composite cathode active material, method of preparing the same, and cathode and lithium battery including the composite cathode active material

A composite cathode active material, and a cathode and a lithium battery each including the composite cathode active material. The composite cathode active material includes: a core including a first lithium transition metal oxide represented by Formula 1,LiMOwherein, in Formula 1, M includes Ni and at least one non-nickel Group 4 to Group 13 element, a content of Ni is about 70 mol % or greater, based on a total content of M, 0.9&#x2264;a&#x2264;1.1, and wherein the first lithium transition metal oxide has a layered crystal structure belonging to an Rm space group; and a shell on a surface of the core, the shell having a spinel crystal structure and including a dopant.

Composite cathode active material, cathode and lithium battery including the composite cathode active material, and method of preparing the composite cathode active material

A cathode active material includes a secondary particle including an aggregate of a plurality of primary particles, wherein the secondary particle includes a nickel-containing lithium transition metal oxide having a layered crystal structure, wherein the plurality of primary particles includes a first primary particle having a size greater than about 400 nanometers, a second primary particle having a size less than about 150 nanometers, and a third primary particle having a size of about 150 nanometers to about 400 nanometers, wherein the third primary particle has a area of greater than or equal to about 80% of a total area of the plurality of primary particles, and wherein the secondary particle has a porosity of less than or equal to about 10% of a total area of the cathode active material.

Cathode active material precursor, cathode active material formed therefrom, method of preparing the cathode active material, and cathode and lithium battery each including the cathode active material

A composite cathode active material, includes a first metal oxide having a first layered crystal structure; and a second metal oxide having a second layered crystal structure, wherein the second metal oxide includes a layered double oxide (LDO). Also a cathode and a lithium battery including the composite cathode active material.

Composite cathode active material, cathode and lithium battery including the composite cathode active material and method of preparing the composite cathode active material

A co-precipitation reactor for manufacturing a positive electrode active material precursor for a secondary battery, the co-precipitation reactor including a reaction chamber having a plurality of suppliers configured to direct a reaction material and a pH adjusting material into the reaction chamber, a stirrer configured to be disposed in the reaction chamber, a drive motor configured to rotate the stirrer, a stirring shaft configured to receive power from the drive motor and rotate the stirrer, a first heater configured to heat an outside of the reaction chamber to heat the reaction material and the pH adjusting material, and a second heater configured to heat an inside of the reaction chamber to heat the reaction material and the pH adjusting material.

Co-precipitation reactor and method of manufacturing material precursor for secondary battery using the same

A method of manufacturing a cathode active material, according to the inventive concept includes: disposing a lithium transition metal oxide and a washing liquid into a reaction chamber; contacting the lithium transition metal oxide with the washing liquid to wash the lithium transition metal oxide and form a washed lithium transition metal oxide; disposing a layered double hydroxide into the reaction chamber to form a coating of the layered double hydroxide on a surface of the washed lithium transition metal oxide to provide a coated lithium transition metal oxide; and heat treating the coated lithium transition metal oxide to form a cathode active material, wherein the cathode active material comprises a layered double oxide coated lithium transition metal oxide, and wherein the contacting the lithium transition metal oxide with the washing liquid and the forming of the coated lithium transition metal oxide are consecutively performed in a single space.

Method of fabricating cathode active material of lithium secondary battery

A cathode active material including a layered lithium transition metal oxide, wherein the layered lithium transition metal oxide includes a metal cation having an oxidation number of +4, and wherein the metal cation is disposed in an octahedral site of a lattice of the layered lithium transition metal oxide.

Cathode active material, cathode and lithium secondary battery including the same, and method of preparing cathode active material

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Seongnam-si, South Korea

Youhwan Son